SP Carbs?

[haydn]

SOMEONE PLEASE LOOK ON EBAY AT THE CARBS THAT I HAVE LISTED UNDER ZXR 400 SP AND TELL ME IF THEY ARE SP CARBS OR JUST STANDARD CARBS AS GETTING PEOPLE SAYING THERE STANDARD AND I DONT KNOW THE DIFFERENCE COULD DO WITH A PICTURE OF 400 SP CARBS OR WEB PAGE TO LOOK AT PLEASE

[RedexRobB]

got the item number mate?

think i found them http://cgi.ebay.co.uk/ZXR-400-TUNED-CAR ... dZViewItem

those arent SP carbs im afraid.

Sp carbs look like this

viewtopic.php?f=1&t=5255

[rene]

person selling them carbs is a right donky, may fits all 400's when some are V4's ect. Spits flames, yeah thats a reason to buy them..

Anyway there standard carbs the link that rob gave you shows proper SP carbs

[Jamz]

SP carbs are flatsides - the regular ones are CV carbs...

Word is that the flatsides are a bit of a pig to live with on the roads, but great on track.

[jake]

word is that flatslides are a pig on the track aswell, i dont know of more than 1 or 2 zxr racebikes that use em..and the ones i know of ar'nt at the sharp end either.
Its not the price of em, most racers would pay the 400 quid they cost if they where any advantage for short circuit racing. I would still like to try em anyhow, there seems to be a certain about them...
I wonder if any of the manx zxrs use them....?

[Jamz]

word is that flatslides are a pig on the track aswell, i dont know of more than 1 or 2 zxr racebikes that use em..and the ones i know of ar'nt at the sharp end either.
Its not the price of em, most racers would pay the 400 quid they cost if they where any advantage for short circuit racing. I would still like to try em anyhow, there seems to be a certain about them...
I wonder if any of the manx zxrs use them....?

So what's the advantage of them, then?

The SP was a homologation special so they could race it in the Jap Supersports 400 series with the close-ratio box etc, wasn't it?

[jake]

From what ive been told, they do give you a bit more power, but the development of tuning the cvs with most tuners has brought the gap down to 2 or 3 hp. So i guess the pain of tuning the flatties outweighs the power advantage..

also, dont know of anyone using the close box either!

[cargo]

Flatsides can be troublesome to set up.
For all the extra I've not ever tried to use them...........................yet
I do have the close ratio gearbox in two of my ZXRs and I really like it.
On up changes very few revs are lost and I find that under heavy braking for slow corners there is less skipping and juddering from he rear as I change down 3 or 4 gears in quick succession.

[jake]

Cargo, are you stephen carr? You ride the manx dont you?
how does the licence requirement for the manx go? i presume its national? do i have to race with the manx club for a few events leading up to the manx?

[cargo]

Yes Jake thats me..............fame at last

Yes you do need a national licence to do the Manx but you don't need to be in the Manx club or race with them.

You also need a TT course licence which you get from the ACU. You need to have competed in 6 events to get it in the year ending June 2008 to get a course licence for 2008.


I'm always very happy to help anyone wanting to ride in the Mamx

[jake]

Thanks mate, ive still got seven sigs to get for my clubman, then the 10 for my national! I wonder if you can upgrade yr licence half way thru the season?
Having said that, it would be some feat to get my national in time for 2009..
2010 sounds like next century, but i guess its only 2 years...
i just hope the minitwins dont kill the class before i get there

[jake]

also on the subject of national licences......

olivers mount!
for me, its up there with the manx for must do's when i get it
http://www.youtube.com/watch?v=_d0SbslpqGg

startline butterflys just watching it

[cargo]

Scarbrough is a fine curcuit but if you really want to go road racing then there is only one place.
Ireland has lots of road race meeting nearly every weekend in the summer there is a road race.
And I mean a real road race on public road close off for the day.
Try searching on youtube with any of the following...............................


Cookstown
Tandragee
Bush
Athea
Skerries
Walderstown
Kells
Faugheen
Dundalk
Dundrod
Ulster Grand Prix

Killalane
Tullyallen

[Xphyral]

Olivers mount is fun, highlight would have to be leaving the ground at around 110ish on the bottom straight.

The tracks a little short though, not much more than a novelty of a road racing circuit now.

And with regards to flatside carbs, i has been told they offer little in regards to extra power as such just a faster throttle response. But i dont know this for certain would be nice to have confirmation.

[Duane]

I race a ZXR here in Oz, with original SP flatslides. I have spent quite a few hours tuning them, and there is no question for racing they ARE faster. I have found they are much harder to perfect, and if you dont get them right they can be crap. A mate also has a set for a CBR as well as his CV's both with ram air, both tuned very well, he has his own dyno. The main difference, yes there is only a couple of hp peak, but the biggest gain is how the flatslides accellerate. Example the CV's take a full 1 1/2 seconds longer to reach max hp in a 4th gear roll on. That sort of extra acceleration, the "jump" off the turns, can make all the difference. Its not the hp that is the main advantage but the rate /speed of acceleration. The people who argue that they are not worth it, generally have not tried a well tuned set. Saying all that I am about to fit and begin tuning some CV's to my ZXR as one of the race classes I want to enter here ban flatslides, because of the "unfair" advantage they give.

In conclusion they are great, but only if you know how to get the most from them, for the average joe, CV's are ten times easier to tune.